Tire-mold.



Hf RAFLovl'cH.

. TIRE MOLD. r APPLlCAT-IQN FILED JUNE 30. i916.

Patented Dec. 19,119,16;

1y Raflbw'cb nated by suitable reference lcharacters `in HARRY nAFLovIcH, or NEW Yoan, N. Y.

TIRE-MOLD.

To all whomz't may'concem:

Be it known that I, HARnrRAFLovIGH,

a Icitizen of the United States, and residing at New Y'ork, in the county of New York and State of New York, have invented eertain new and useful Improvements in" l`are Molds, of which the following` .is a speclfication, such as'will enablethose skilled in the art to whichl it appertains to 'make and use the same;

.This invention relates to tire molds and the object thereof is to provide Va mold of this class which is composed of separate detachalbly connected parts and -by means of which tires may be more accurately constructed or formed; and a further-object is to provide a device of this class which 1s simple in construction and operation and efiicient in use. Y

The invention is fully disclosed v1n the following specification, of which the accompanying drawing forms'a part, in which'the separate parts of my improvement aredesigeach of the views, and in which Figurel is a side partly sectional vlew of my improved mold indicating the tlre therein; Fig. 2 a 'transverse section on the line 2'-2 of Fig. 1 and on an enlarged scale;4 and, Fig. 3 a view similar to Fig. 2 but showing a modified form' of construction. y

In Figs. .1 and 2 of the drawing, I have shown at a an annular tire mold split centrally and in theA plane thereof as shown at a2, an d centrally and concentric to the axis thereof, as shown at as to form separate annular parts 14, a5, a-and a?, the parts atand a5 having 'a tongne and groove-connection with each other as shown at as, while the parts aand a, and ai and Va7 respectively are iianged where they join at a3 as shown at a and al", the flanges a9 of the parts a4 and a overlapping the flanges-11 of the a* and a, after which the ring b2 is placed parts a and a".

. Placed between the separateiparts a6 and a are -two annular rings b--b which are detachably connected with the separate l parts z8-a" by -a tongue and groove connection b3 and b4, and the rings b-bz are con?` pms 55 nected with each other by aliningl and the transverse width of the rlngs t-b is the `same as the transverse width ofthe adjacent faces of the, parts a and a7 of the mold.

Formed on the perimeter of the parte a* `Specification of Letters Patent.

Application filed June 30, 1916. Serial No. 106,785

gether.

andai5 and centrally thereof are a plurality of lugs or projections a.11 through which arepassed bolts c having nuts o2 and by this construction the separate parts a4 and a may be drawn and secured together and formed on the inner faces of the parts a and a7 of the mold are a plurality of lugs or projections a12 which correspond. with the lugs Aor projections au Aand through Patented Dec. 19,1916.

which are passed bolts d having nuts d2 by means of which the separate parts a and a7' with the annular rings b--b2.there.

between may be drawn and secured to- `The inner faces of the parts a* and a are arc-shaped in form as shown at e and are provided adjacent to the abutting faces thereofl with annular grooves e2, and the parts a and a7 of the moldl are also arc-'- shaped in form v on their inner faces as shown at e3 and are ea-'ch -providedwith deep annular grooves c* which forni corresponding annular beads e5.

With the above construction the inner faces of the parts af, a, a6 and a" when secured together, asshown in Fig. 2, form the core of the mold which constitutes the 'outer dimensions of the tire f when placed -therein, the annular grooves e* and beads e5 forming the corresponding annular beads f2 and grooves f8 of the tire, and placed in the tlre f is the usual inner tube or airbag g which is inflated in the usual manner to re- .tain the proper form of the tire f on the inner wallsthereof, it beingunderstood that an inflating valve la. indicated in Fig.`1 is .connected with the tube g and passes between the annular rings b-b2 or an aperture formed therebetween. With this construction the parts a* anda. are first Aplaced l together and laid on a table or suitable support, the annular ring b bein placed on the part a?, after which the tire i with the inner tube or bag g therein is placed in the parts that thetire. f is made orbuilt up in the. usual manner and when placed in position,

ashereinbeQre'deScribed, the mold a may los Y be, placed in .a suitablefvulcanizer in which the tire f, kor the rubber-thereof, is melted and said rubber will"be forced into the .grooves'e' in the parte@ Yandl a7 and theV grooves e2 .in the parts ai and a5, this process of vulcaniziig'being old and vwell lmown.

In Fig. 3 of the drawing, i 'have shown amodied form of construction which consists in substituting for the annular ringsv I-b other rings v1 which are detachably connected with thel parts a and a* by a tongue and groove' construction i? and are placed in alinement with each other by alining pins s andthe rings i are provided with extensions 4- having annular beaded portions 5 and annular recessed portions i, and in this construction the tire f, or the inner ldiameter thereof, is made .plain in `form or without the beaded and recessed portions f2 and f3 and, as will be seen, the part of' the inold which formed said beaded and 1recessed portions in the tire has, been lled be quickly and accurately proved vulcanizingfineans-a .Thejini roved mold herein shown and describedw ich is composed of se arate de' Atachal'iiy connected parts, facilitates the vinaiiufacture of tires, and such tires may be more perfectly formed in the manufacture thereof by reason of the fact that one of l f the separate partsof the mold may be ded5 "thetire therein'todeteimine,'whether 4 therewith, and bynieans 30 v in b 4the extensions 4 of the annular rings ci. n Fig. 3, li have alsoshown another inodication which consists in lforming in the separate parts at, a5, of* and a7 of the mold annular ports or passages j, j2, j and j* having pipes le, k2 'ics and la* communicating tion steain,hot air or hot'water, or the like may .be introduced-into the chambers j, -j2, ja and .j to vulcanize the tire f placed in the lseparate parts of the mold when secured 'togetlierand with this construction the mold 1 is' ma compact in form and the tire `may formed by the imtachedl therefrom for the purpose of examof Ithis construc- Y parte together.

rasee or not, it has been properly' formed'or the work thereon complete and b means of the ring constructions b, b2 an e' tires or different class, or of any desired form may "be madein connection with a single mold.

Having fully described my invention,

what' 1 claim as new and desire' to secure by l .y

`Lettersllfatent is:-

1. In a mold .for pneumatic tires, an annular casing, said casing being divided centrally and. in the plane of the mold and centrally and concentrically to the axis thereof to form separate parts which are detachably connected with each other, means for locking the parts formed by theirst division together, and Vtwo annular rings placed between the 'adjacent faces' of the inner'separate parts of the casing.

v 2. In. a mold for pneumatic tires, an annular casing, said casingbeing divided cenn trally and in theplane of the mold and centrally and concentrically to the axis thereot1 to forni separate parte having a tongue `and grooved connection, whereby theyaredetachably connected with each other', annular members placed on the adj acentfapes et the inner parts of the casing, and means .for locking the vpartsv formed by the'irst division tcigether.y

3. in a moldforpneuinatic tires, an an- 

